4857 Venner Rd, Martinez, CA 94553 Property Records

Contra Costa County property record for 4857 Venner Rd, Martinez, CA 94553

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,679 sqft · built 1962
Lot Size	1.2 acres (52,272 sqft)
Owner	2 Company Names on File
Last Sale	$1,075,000 (Nov 2025)
Tax Bill	$2,167 (2025)
Deeds & Mortgages	Nov 2025 Sale
Flood Zone	Zone X (minimal risk)
APN	`162-131-009-1`

Property Details

APN / Parcel Number

Primary APN	`162-131-009-1`
Alternative APN	`162-131-009`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,679 sqft Living Area
1st Floor Area	1,679 sqft

Exterior

Year Built	Built 1962
Effective Year Built	Effective 1963
Lot Area	52,272 sqft
Garage Type	Attached
Garage Area	441 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	4857 VENNER RD
City	MARTINEZ
State	CA
Zip	94553-4546
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R40
Legal Description	MUIR OAKS POR LOTS 27 & 28
Legal Subdivision	MUIR OAKS
Legal Lot Number	27,28
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	CENTRAL CONTRA COSTA
Census Block Group	4
Census Block	4000
Census Tract	321101

Owner

Source: Contra Costa County records · APN 162-131-009-1

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Company Names on File
Mailing Address	4857 VENNER RD, MARTINEZ, CA 94553-4546
Owner Type	Company
Vesting	Life Tenant

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Nov 21, 2025 · Amount on Record
Deed Sale	Nov 21, 2025 · Amount on Record
Deed Document Number	2025131403
Prior Transfer Date	Jun 19, 2025
Prior Transfer Doc	0000063956
Record Updated	Sep 20, 2026

November 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Nov 21, 2025
Property Address	4857 VENNER RD, MARTINEZ, CA 94553-4546
Document Number	0000131403
Map Reference	MB 10 PG 243
Instrument Date	Nov 15, 2025
Instrument	2025- 131403
Transaction Type	Transfer
Record Updated	Dec 02, 2025
Title Company	TWFG NATIONAL TITLE INSURANCE COMPANY, WFG NATIONAL TITLE INS CO

Transaction

Amount	Amount Recorded
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4857 VENNER RD, MARTINEZ, CA 94553-4546
Investor	Possibly a Property Investor

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Martinez City
Unified School District	Martinez Unified School District (KG - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value
2026		$1,075,000 (+902.43%) Land $570,000 Building $505,000
2025	$2,167.00 (+6.49%) Homeowner's exemption	$107,239 (+4.04%) Land $35,264 Building $71,975
2023	$2,035.00 (+1.4%) Homeowner's exemption	$103,077 Land $33,896 Building $69,181
2022	$2,007.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force
Nearby Flood Claims	1 (1981)
Claims Outside the SFHA	1 of 1
Most Recent Claim	Nov 1981 · rainfall accumulation

Wildfire

Wildfire Risk	Moderate above 43% of the US · lower than 74% of California
Wildfire Likelihood	0.06% annual chance
Exposure	None beyond ember reach

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
AT&T Fixed Wireless · DSL · Fiber in parts of the area	100 / 20

May also be available: Radiate Holdings, T-Mobile USA, Unwired, Verizon.

Based on FCC filings for 256 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	CITY OF MARTINEZ serves 31,015 people
Water Source	Purchased surface water from CONTRA COSTA WATER DISTRICT
Last State Inspection	Oct 2025
Lead	Under 1 ppb (2023–2025) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.